Open-hearth furnace.



M. HVID.

OPEN HEARTH FURNACE.

APPLICATION man OCT-21.1918.

Patented Mar. 4,1919.

3 SHEETS-SHEET I.

ifzz/erzf,

M. HVID.

OPEN HEARTH FURNACE.

APPLICATION FILED 061321.1918.

Patented Mar. 4,1919.

3 SHEETSSHEET 3.

III I l//// l miimm rm; mmms PEYERS ca, FNOYO-LITNO.. wAsrinvawu, n. c.

I manufacture or aresidue of petroleum disj tillation,the dust. from which'is of adhesive quality. It is the practice to fill the checkerspaces todislodge the interstices to clear them.

orEN-HEABTH FURNACE.

To all wkomit'mag coiwern:

Be it known that- I, MARINUS Hvn), zenof the'United States, residing at Chicago, in the county of Cook and State of Illinois, have'invented a new. and use Improvement in Open-Hearth Furnaces, which thefollowing is a specification. Y

My invention relates to improvements in open-hearth furnaces wherein the gases are directed from slag-pockets to the tops of checker-chambers through flues leading from thefo'rmer to the latter, to cause the downwardly them, from which fines, thus provided at the bottonis of the checkers, thes'pent gasesxpass' through flues leading tothe stack and provided with reversing valves, and sometimes, to

utilize'the residual heatof the gases,through boilers onth'ei-r way tofthe stack. *The heavy matter carried by the hot gases, and which is termed dust in the art, tends to clog the checkers, thereby reducing their" capacity, and this result-is increased "where the fuel used is tara"productof cokechambers only partially with checker-work to leave suliicient space in the chambers over the checkersQtO -enable fmen v to enter, from time to time, and work inthese the" dust "by poking it down through The provision'of such spaces further reduces the capacity andtherefore the efficiencyiof the checker-chambers.

Moreover, where, as heretofore in such open-hearth furnaces, the spent gases-from the checkers discharge to fiues at the base of the checker-chambers, access to the latter, as for tearing down and rebuilding, is obstructed by complicated reversing-valve mechanism and flues, which rise above the ground-surface'at such base, whereby the work of repairing the checkers is impeded and greatly augmented.

It is the object of my invention to overcome these and other conditions; and this I V accomplish by my improvements hereinafter described and which are illustrated ina pre- 7 ferred embodiment and in their cooperative a as "Fig; 1; Fig; v3

ful'

vbe required to afford is equipped with valves. reversing purposeyand' from this conduit extendathewaste-.heatiboiler-flue I3 and the.

-stack-fluej 14, eachequipped valve 15-. 1 Y Asshown in of the checkers,

respective flue the stack through Specificationpf Lett'eisilatent. Patented Mar, 4,1919, j Application filed October 21, 1918. Serial No. 259,013. i

1 or Fig. 2, and Fig-. 15 is a The structure, as a whole, naryand well known type of one-hearth re- "generativei furnace and need not, therefore,

more detail than may a a clear understanding. V of the features of my improvement andexbe herein described in plain their functions. V v V V v From the lower part ofeach slag-pocket 5 below the hearth 6, the hot-gas flue 7 leads 9, from the'upper which'the exhaust-flue 10 leads to thegas inlet conduitll (Fig. 4), tothe various flues beyond the checkersand 12 for the usual flue (10. flhe space 1'6 affords for the purpose hereinafter explained. 1 s Y Thehot gases passing from the hearth 6 through a slag-pocket 5 flow through the 7 into the chamber 8, and the larger portion of the dust carried. by

'them' precipitates in the chamber 8. Thus the gases which rise through the checkerwork, being relieved of such portion of the dust, are preventedfromdepositing it in the checkers, thereby largely avoiding the clogging effect referred to, with of augmenting the efficiency-of the checker and their efficiency is further enthe advantage chambers; hanced, by omitting the space over their upper portions,

as to render unnecessary provision of such space for men to enter it for'pokmg the .checkers to clear them, as hereinbefore re-' ferred to. v

which is common Fig.1, the-checkerrwork en- -tirely fills the chamber 9,- eXcept a portion thereof atl6and-foramere pocket'17 provided atthe inlet-end of the a relatively shallow section V v since the deposits of dustin the interstices is comparatively so littlev at the end of the 1 T ATE QFFIGE MAnINUs HVID, or CHICAGq-ILL INOI S.

-- 11,:Fig. 2 ,Fig'. 2 is asectionon line 2+2, 9

is a section-on ll11e: 3'3, Fig.

' 2, Fig. 4 isa plan view partly in section on line H, Fig; to horizontal sectionalview of the acheckerwork on line 55 of Fig. 1. V p islike an ordidirectly in downward inclination to a dusti chamber 8 underneath the checker-chamber l end of the outer sideof with a shut-off stack-,emayellrlae in elevated .=position; -wher.e 1m

unobstructed inclination from theloWer part dust-chamber 8 a flue 7; to rise yer chambercommunicat'ing withthestack and tically in that section and pass thence a dust-chamber underneath the checkers, a

through the entire checker worlrtothe wastegas'flue leading directly in downward pocket 17 and escape from the latter to their inclination from the lower part of the slagfiue 10. If the checker-Work Were'to "e11 p ockefiinto the dust-chamber, the checkertirely. fill the chamber 9, the stack-draft Work approximately filling the checker- Wouldtend-to pull the gases diagonally fromchamber-and-f-orming a shallow seotion overthe mouth of the flue 7 through-;the:;checker&;pthe;gas;admission,sideof the dust-chamber. r

to the pocket 17 and flue 10, thereby slight- 3. In an open-hearth furnace having a ingMt-heheating of their-einn'eriportion,(-By -slag-pocket below =the hearthg -a checker? proyi'ding this shallower section,- of the gases: is distributed more throughout-;.the;. checker-.chambent' through openings, one of Whichri-s. repre-s of the checker-chamber.

the heatz; chamber: and? a dust-chamber under-neath'f uniformlgyrg r the-checkers; an unobstructed aste-gas fine a leadingwdirectly fromithe IOWQDQPHI'IHOf the.-

I The accumulations of -dust in .the i champ; slag-pocket einto the dust-chamber, rand g4 ber 8 may be removed; from-. timeugto; time;wexhaust fluealeadingironl the.-a1pper- :(part sented at 18 in Fig 1, fonconyenient access 4. 111 an 10 penhea1-ith. fiui'rnaceshaving i to whichalrunwiay is ShOWD tO be provided-:e-slag-pocket- ;b elo;W-.-,the hearth,=" a checker at 19 for-loading thedustand cartingizit; rzchamherandiazdust charnber underneathethew.

part-of the slag-pocketinto. from the slag-pockets downwardlyiin-toxthemithe dust chamber an exhaust-flue -l leadingv dustainrterceptingi achamber: underneath the? As :willbe:seen -bycdirecting the"hotlgasesi checkers, =the 'flues 10 and; connections thereeE-E With through ziawhich they) discharge 1 to 1 the from the-upper; part ofthe checkerechamber. V V 2111(115111168 in the samei :plane. and eon-r j.

nccting saith cXhaust-fiue with the stack}; 1' a '7 5. In an epen-hearthfiurnace having;

they aresout'of theWayofobstructingaccessi 1'slag-pocket belo w *theJihearth,-; a. checlnrg I to 13-1161? chamber :8 and to--theicheckerswvhen; required, as 'ior tearing down and 'reb ui'lde; i hemm I V Icl aimw a v 1, 111 fan -0P6Ilf-h62tlfllhf-urnace 1 having-= a slag p'ocket ubelow the hearth, 1 a F checker chamber c ommunicating with the stack; a dust-chamber underneath the checkers,-:af' Waste-gasflue leading directly in downward :checker-chamben and term-mg x a sh allow :sec

of thejslag pocket into the dust-ehambers end oftherexhauStfi e ::f 29111opn hearth furnace havingza' v1 7 s1ag-ppcketbeloyvf the hearth, and a checker a chamber and a i pocket; adjacent the inlet Copies of this patent may be obtained for five'wcents zeaeh gfny.agldnessing gthc-$ 2Gommissiqnergzef ratents,

- a Washington, 13,05?

. rectly in ldownward .-,inclin'ation ifromrzthef memesm.

fi-chamber andwa dust, ehamloer ;gurrderneathg Vi the checkers, ;a;W.aste.- g nflue leading :di-' 1. lower-part of :the'slag pgcketfinto the:dust-is chamber; and anvv exhaushfiufa: leading; from a the-upper part-of 5the checlzereehamber 7 V I and k'lt'he BhBOkGIE-WODk approximately {filling the g f '75, 5 tion-oyer'the gas-,adnaissionisideaof thedust 

